diff --git a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/util/CharsetProvider.scala b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/util/CharsetProvider.scala
index d85673f2ce811..f805d2ed87b52 100644
--- a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/util/CharsetProvider.scala
+++ b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/util/CharsetProvider.scala
@@ -18,13 +18,15 @@
  import java.nio.charset.{Charset, CharsetDecoder, CharsetEncoder, CodingErrorAction, IllegalCharsetNameException, UnsupportedCharsetException}
  import java.util.Locale
 
+ import scala.collection.SortedSet
+
  import org.apache.spark.sql.errors.QueryExecutionErrors
  import org.apache.spark.sql.internal.SQLConf
 
 private[sql] object CharsetProvider {
 
   final lazy val VALID_CHARSETS =
-    Array("us-ascii", "iso-8859-1", "utf-8", "utf-16be", "utf-16le", "utf-16", "utf-32").sorted
+    SortedSet("us-ascii", "iso-8859-1", "utf-8", "utf-16be", "utf-16le", "utf-16", "utf-32")
 
   def forName(
       charset: String,